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Capsular Serotyping of Streptococcus pneumoniae by Latex Agglutination

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THE PRECIPITIN REACTION OF ANTIPNEUMOCOCCUS SERA : III. THE RATIO OF PRECIPITIN TO PROTECTIVE ANTIBODY IN TYPE II.

H Sobotka¹, M Friedlander

¹Lucius N. Littauer Pneumonia Research Laboratory, Department of Bacteriology, University and Bellevue Hospital Medical College, New York University, New York.

The Journal of Experimental Medicine

|October 30, 2009

Summary

The precipitin test can measure protective antibodies in fresh antipneumococcus horse sera (Type II). This method is effective for unrefined sera, indicating a link between precipitin and protective antibody levels.

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Published on: November 22, 2017

Area of Science:

Immunology
Microbiology
Serology

Background:

Antipneumococcus horse sera are crucial for studying bacterial infections.
The relationship between precipitin and protective antibodies requires further investigation.

Purpose of the Study:

To determine the ratio of precipitin to protective antibody in Type II antipneumococcus horse sera.
To assess the applicability of the precipitin test for quantifying protective antibodies in sera.

Main Methods:

Analysis of fresh antipneumococcus horse sera (Type II).
Application of the precipitin test.
Comparison of precipitin test results with protective antibody levels.

Main Results:

The ratio of precipitin to protective antibody was determined for several Type II antipneumococcus horse sera.
The study found a correlation between precipitin and protective antibody levels.

Conclusions:

The precipitin test is a viable method for assessing protective antibodies in unrefined antipneumococcus horse sera.
The findings support the concept of parallelism between precipitin and protective antibody levels in these sera.